System for interconnecting a synchronous path having semaphores

Details System for interconnecting a synchronous path having semaphores System for interconnecting a synchronous path having semaphores

1992-09-24

1995-07-18

Lee, Thomas C.

Boots, shoes, and leggings

395250, 395650, 395325, 36492796, 36492799, 364919, 364269, 3642705, 36424294, 364229, 3642222, 364271, G06F 13376, G06F 1314, G06F 1300, G06F 300

Patent

active

054349753

ABSTRACT:
To overcome the lack of support in time-sharing and uniprocessor operating systems such as the UNIX.RTM. operating system for real-time and multiprocessor applications, there is provided an asynchronous inter-process communications capability that can be grafted onto the operating systems. Communicating processes (100, 103) communicate via datagram messages through logical asynchronous inter-process communications links (110) each having a synchronous segment (101) and an asynchronous segment (102). The links include a message-serving hub process (11) that communicates in a synchronous, buffer (302) and semaphore (300)-based, manner with processes (100) that are message senders, and communicates in an asynchronous, queue (602) and signals (600)-based, manner with processes (103) that are message destinations. The hub process may be implemented at any process level of the operating system.

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